fix(ci): Use heredoc for multi-line commit message in perf-report

.gitlab-ci.yml

@@ -289,10 +289,13 @@ perf-report:
         git pull origin main --rebase
         git add reports/
         git diff --cached --quiet || {
-          git commit -m "perf: Add performance report for $CI_COMMIT_TAG
+          git commit -m "$(cat <<EOF
+perf: Add performance report for $CI_COMMIT_TAG
 
 Generated automatically by CI after tagged release.
-Pipeline: $CI_PIPELINE_URL"
+Pipeline: $CI_PIPELINE_URL
+EOF
+)"
           git push origin main && echo "SUCCESS: Report committed to main" || \
           echo "WARN: Push failed - add DEPLOY_KEY variable (base64 encoded SSH private key)"
         }